A Symmetric Perfectly Matched Layer Using a 9-Point Finite Difference Method for 2D Helmholtz Equation
Y. Park, H. Park, H. Song and C. Shin
Event name: 79th EAGE Conference and Exhibition 2017
Session: Seismic Modelling - Acoustic A
Publication date: 12 June 2017
Info: Extended abstract, PDF ( 899.12Kb )
Price: € 20
Our strategy is to construct a symmetric matrix incorporating both the PML and the dispersion-minimizing property. We introduce a symmetric form of the PML for 2D Helmholtz equation so that a numerical factorization of a sparse matrix gets efficient. It reduces computational time and memory consumption. The symmetric PML equation is more suitable to applications utilizing Helmholtz equation than the nonsymmetric PML equation.